Remove superfluous "has" function

Dependencies

• [2] RND7XFNH getQueuedBuilds(): Periodically stop to handle priority bumps
• [3] HUUZFPPK Fix race between the queue monitor and the builder threads
• [4] HJOEIMLR Refactor
• [5] 24BMQDZA Start of single-process hydra-queue-runner
• [6] OG3Z3QGC Namespace cleanup
• [7] T5BIOVJE Add support for tracking custom metrics
• [8] MHVIT4JY Split hydra-queue-runner.cc more
• [9] ENXUSMSV Make concurrency more robust

Change contents

• replacement in src/hydra-queue-runner/hydra-queue-runner.cc at line 252
  [3.13628]→[3.2475:2513](∅→∅)
  − if (has(steps, step)) return;
  [3.13628]

  [3.2513]
  + if (steps.count(step)) return;
• replacement in src/hydra-queue-runner/queue-monitor.cc at line 92
  [2.419]→[3.22345:22390](∅→∅),[3.22345]→[3.22345:22390](∅→∅)
  − if (has(*builds_, id)) continue;
  [2.419]

  [3.22390]
  + if (builds_->count(id)) continue;
• edit in src/hydra-queue-runner/state.hh at line 442
  [3.9202]→[3.33277:33379](∅→∅)
  −

  −

  − template <class C, class V>

  − bool has(const C & c, const V & v)

  − {

  − return c.find(v) != c.end();

  − }